[gnugo-devel] endgame tuning

[Paul Pogonyshev]

this patch adds several minor endgame patterns.  see the
attached file, moves 43 and 46.  some of the patterns may
need revision.

Paul


Index: patterns/endgame.db
===================================================================
RCS file: /cvsroot/gnugo/gnugo/patterns/endgame.db,v
retrieving revision 1.53
diff -u -p -r1.53 endgame.db
--- patterns/endgame.db 18 Jul 2003 18:59:22 -0000      1.53
+++ patterns/endgame.db 12 Aug 2003 20:37:07 -0000
@@ -245,12 +245,14 @@ Pattern EE7
 # tm New Pattern (3.1.19)
 #   s classification, in case of ko (see trevorc:180)
 # pp Revised (3.3.18) the pattern to match on edge only.
+# pp Added followup (3.5.1)
+# FIXME: 3 is very arbitrary. Maybe split this pattern?
 
 ?.X?
 O.*.
 ----
 
-:8,sOXe,terri(0.75)
+:8,sOXe,terri(0.75),followup(3)
 
 ?.X?
 O.*a
@@ -259,6 +261,24 @@ O.*a
 ;proper_eye(a) && safe_omove(*)
 
 
+Pattern EE8
+# pp New pattern (3.5.1)
+# This is a defense against EE7.
+# FIXME: 3 is very arbitrary. Maybe split this pattern?
+
+?.O?
+X*..
+----
+
+:8,OXe,terri(0.75),reverse_followup(3)
+
+?.O?
+X*.a
+----
+
+; proper_eye(a)
+
+
 # first line hanes (except in corner)
 #####################################
 
@@ -834,6 +854,71 @@ Pattern EE504
 ---
 
 ;!omoyo(*)
+
+
+Pattern EE505a
+# pp New pattern (3.5.1)
+
+?X.O       endgame ko threat
+...*
+----
+
+:8,OXe,terri(0.1),followup(2)
+
+?XcO
+dab*
+----
+
+; proper_eye(d) && !oplay_attack(*,b,c,a,*) && oplay_attack(*,?,a,d,b,d)
+
+
+Pattern EE505b
+# pp New pattern (3.5.1)
+
+?X.O       endgame ko threat
+...*
+----
+
+:8,OXe,terri(0.1),followup(1)
+
+?XcO
+dab*
+----
+
+; proper_eye(d) && !oplay_attack(*,b,c,a,*) && !oplay_attack(*,?,a,d,b,d)
+
+
+Pattern EE506a
+# pp New pattern (3.5.1)
+# EE208[ab] don't match if opponent gets a reverse threat at `b'.
+
+?X.        endgame ko threat
+..*
+---
+
+:8,Xe,terri(0.1),followup(2)
+
+?Xb
+ca*
+---
+
+; proper_eye(c) && !oplay_attack(*,a,?,b,*) && oplay_attack(*,?,a,c,c)
+
+
+Pattern EE506b
+# pp New pattern (3.5.1)
+
+?X.        endgame ko threat
+..*
+---
+
+:8,Xe,terri(0.1),followup(1)
+
+?Xb
+ca*
+---
+
+; proper_eye(c) && !oplay_attack(*,a,?,b,*) && !oplay_attack(*,?,a,c,c)
 
 
 # second line descents

endgame015_1.sgf
Description: Text document